153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dirent.h>
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#include "filesystem.h"
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static const int DISKNAME_LEN = 100;
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static const char * DISK_DIR = "./disks/";
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int get_diskname(char * name);
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int list_disks();
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int main()
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{
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char buf[DISKNAME_LEN - strlen(DISK_DIR)];
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char diskname[DISKNAME_LEN];
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int create = 0;
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create = get_diskname(buf);
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strcpy(diskname, DISK_DIR);
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strncat(diskname, buf, DISKNAME_LEN);
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if (create)
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{
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if (make_fs(diskname) < 0)
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return 1;
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}
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if (mount_fs(diskname) < 0)
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return 1;
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// test it out real quick
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int d = fs_open("example");
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char buffer[13] = "what is this";
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char target[13];
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printf("\nwriting 'what is this'\n");
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int bytes = fs_write(d, buffer, 13);
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fs_lseek(d, 0);
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printf("%d bytes written\n", bytes);
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print_disk_struct();
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printf("\nreading 'example' file\n");
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bytes = fs_read(d, target, 13);
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fs_lseek(d, 0);
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printf("result should be '%s': |%s|\n", buffer, target);
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printf("%d bytes read\n", bytes);
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print_disk_struct();
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printf("\ntruncating 'example' to 10 bytes\n");
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fs_truncate(0, 10);
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print_disk_struct();
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printf("\nreading truncated 'example' file\n");
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memset(target, 0, 13);
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bytes = fs_read(d, target, 13);
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fs_lseek(d, 0);
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printf("result should be '%.10s': |%s|\n", buffer, target);
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printf("%d bytes read\n", bytes);
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print_disk_struct();
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char chonk[9000];
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for (int i = 0; i < 8999; i++)
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{
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chonk[i] = 'a' + i % 25;
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}
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chonk[8999] = '\0';
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printf("\nwriting a really long file\n");
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bytes = fs_write(d, chonk, 9000);
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fs_lseek(d, 0);
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printf("%d bytes written\n", bytes);
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print_disk_struct();
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printf("\nreading really long file\n");
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memset(target, 0, 13);
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bytes = fs_read(d, target, 12);
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fs_lseek(d, 0);
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printf("%d bytes read\n", bytes);
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printf("result should be '%.12s': |%s|\n", chonk, target);
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print_disk_struct();
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printf("\nreading the whole chonk\n");
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char chonkt[9000];
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memset(chonkt, 0, 9000);
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bytes = fs_read(d, chonkt, 8999);
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fs_lseek(d, 0);
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printf("%d bytes read\n", bytes);
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int a =printf("result should be '%s'", chonk);
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int b = printf(", and it was this|%s|\n", chonkt);
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printf("printed %d %d\n", a, b);
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print_disk_struct();
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fs_close(0);
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if (umount_fs(diskname) < 0)
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return 1;
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return 0;
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}
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int get_diskname(char * name)
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{
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int create;
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printf("Create a new disk? (y/n): ");
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create = fgetc(stdin) != 'n';
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fgetc(stdin);
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if (create)
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{
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printf("Name the new disk: ");
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}
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else
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{
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list_disks();
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printf("Enter the name of disk to load: ");
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}
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fgets(name, DISKNAME_LEN - strlen(DISK_DIR), stdin);
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strtok(name, "\n");
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if (name[0] == '\n')
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{
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printf("Invalid disk name!\n");
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exit(1);
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}
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return create;
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}
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int list_disks()
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{
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struct dirent * file;
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DIR * dir = opendir(DISK_DIR);
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if (dir == NULL)
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{
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printf("Couldn't find %s directory\n", DISK_DIR);
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return 1;
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}
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printf("List of available disks:\n");
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while ((file = readdir(dir)) != NULL)
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{
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if (strncmp(file->d_name, ".", 1) != 0
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&& strncmp(file->d_name, "..", 2) != 0)
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printf(" %s\n", file->d_name);
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}
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closedir(dir);
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return 0;
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}
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